EP 0779740 B1 20010725 - Cable network system for video distribution and bidirectional data transmission, providing frequency conversion in the return path
Title (en)
Cable network system for video distribution and bidirectional data transmission, providing frequency conversion in the return path
Title (de)
Kabelnetzwerksystem für Videoverteilung und bidirektionale Datenübertragung, mit Freqenzumsetzung im Rückkanal
Title (fr)
Système de réseau de câble pour distribution vidéo et transmission bidirectionelle de données, avec conversion de bande de fréquence en voie de retour
Publication
Application
Priority
NL 1001909 A 19951215
Abstract (en)
[origin: EP0779740A1] In a cable network system for combined transmission of radio / television signals with data traffic between a main station (1) and an end connection (13), any primary distribution centre (5) comprises channel conversion tools (23) in order to shift the signal frequency band of the data return signal from any secondary distribution centre (8) from a lower band to a unique band with a higher position in the frequency spectrum. The various primary distribution centres (5) are linked to the main station (1) by means of a separate data return link (32), which is separated from a signal supply link (31). The various lower bands of several secondary distribution centres (8) may be transferred jointly but separately in the data return link (32). Consequently, the outgoing signal is injected into the signal of the radio and television programmes and offered to the end connection in combination with it. <IMAGE>
IPC 1-7
IPC 8 full level
H04N 7/173 (2011.01)
CPC (source: EP)
H04N 7/17309 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0779740 A1 19970618; EP 0779740 B1 20010725; DE 69614072 D1 20010830; DE 69614072 T2 20020321; NL 1001909 C2 19970617
DOCDB simple family (application)
EP 96203401 A 19961211; DE 69614072 T 19961211; NL 1001909 A 19951215